上一页链接出现在 MVC3 Razor 应用程序的地址栏中？

Question

我正在使用 MVC3/Razor。登录网站后，出现首页，但不明白为什么会出现上一页的url。

场景：当我将用户从登录页面重定向到主页时，地址栏中的 url 显示为“http://localhost:55104/Account/LogOn”而不是“http://localhost:55104/Home/Index” "

帐户控制器

 // GET: /Account/LogOn
    public ActionResult LogOn()
    {
        if (HttpContext.User.Identity.IsAuthenticated == true)
        {
            return RedirectToAction("Index", "Home");
        }
        else
        {
            return View();
        }
    }

    // POST: /Account/LogOn
    [HttpPost]
    public ActionResult LogOn(LogOnModel model, string returnUrl)
    {
        if (ModelState.IsValid)
        {
            try
            {
                if (AppAuthentication.Authenticate(model.UserName, model.Password, "10.0.3.18"))
                {
                    string userName = model.UserName;
                    var user = new List<String>();
                    MySqlConnection con = DAL.GetMySqlConnection();
                    MySqlCommand cmd = new MySqlCommand("SELECT user_id, user_fname FROM users  WHERE  user_code='" + userName + "' AND user_treeCode <> 'xxx'", con);
                    MySqlDataReader rdr = cmd.ExecuteReader();
                    while (rdr.Read())
                    {
                        user.Add(rdr.GetString(0));
                        user.Add(rdr.GetString(1));
                    }
                    con.Close();
                    FormsAuthentication.SetAuthCookie(user[0], model.RememberMe);
                    Session["userID"] = user[0];
                    Session["userName"] = user[1];
                    return RedirectToAction("Index", "Home");
                }
                else
                {
                    ViewBag.OpenID = "Invalid credentials ";
                }
            }
            catch (Exception ex)
            {
            }
        }
        // If we got this far, something failed, redisplay form
        return View(model);
    }

Gloabal.asax

 public static void RegisterRoutes(RouteCollection routes)
    {
        routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
        routes.MapRoute(
            "Default", // Route name
            "{controller}/{action}/{id}", // URL with parameters
            new { controller = "Home", action = "Index", id = UrlParameter.Optional } // Parameter defaults
        );           
    }

 protected void Application_Start()
    {                       
        RegisterGlobalFilters(GlobalFilters.Filters);
        RegisterRoutes(RouteTable.Routes);
    }

Answer 1

您的登录表单必须是 Ajax 表单。在这种情况下，RedirectToAction 就像一个 View 方法。

Answer 2

你可以这样用

 if (ModelState.IsValid)
    {
        if (string.IsNullOrEmpty(returnUrl))
        {
            returnUrl = Url.Action("Index", "App");
        }
        if (Request.IsAjaxRequest())
        {
            return Json(new { returnUrl = returnUrl });
        }
        return Redirect(returnUrl);
    }

在视图中：

<% using (Ajax.BeginForm(
    "LogOn", 
    null, 
    new AjaxOptions { 
        HttpMethod = "POST", 
        OnSuccess = "success" 
    }, 
    new { 
        id = "SignInForm", ReturnUrl = Request.QueryString["ReturnUrl"] 
    })) { %>
        <<Page HTML Controls>>
        <input type="submit" value="Log On" />
<% } %>

<script type="text/javascript">
function success(context) {
    var returnUrl = context.get_data().returnUrl;
    if (returnUrl) {
        window.location.href = returnUrl;
    } else {
        // TODO: update the target form element with the returned partial html
    }
}
</script>